@8:56 put a penny in between the 2 cogs to tighten the nut then there's no strain on the conrod bearing👍

@JLMotorsport

3 жыл бұрын

Thanks for the tip 👌🏻

@zatomlzxzanamolzy1253

2 жыл бұрын

Yeah, that was crazy 🤪

@jonaskahl8474

2 жыл бұрын

@@JLMotorsport both not very good. If you put something between two gears, it will ALWAYS bent the shaft. So your crank bent. You have to block the gear itself. First tighten the balance-shaft gear with a tool to hold gear like something for block clutch hub or leather-belt holder. Then tighten the crank bolt with a tool, that goes into the holes from the balance-shaft gear. That's my method. Do this and your crank+bearings will last longer.

@officialmysteriousrider130

Жыл бұрын

You must be out ov them penny's be now m8 🤣

Great job bro!

Bravissimo,bel video!

The way you instaled crankshaft bearing into cases with hammer is mistake. Case shoudl be warmed up and bearing would fall inside without any force. K2 sealant is poor quality and you spread it with fingers. That makes it non sticky.

@MrFlyingPanda

3 жыл бұрын

Worst is the extension in the rod to tighten the nut..

¿Alguien sabe porque en el minuto 21:38 le coloca dos juntas tóricas a la válvula si solo lleva una ?

You should lube the inner rubber seal on the crankshaft? Am I wrong.

Hola buenas excelente trabajo y de gran ayuda, me podrías pasar el enlace de todas las piezas que tuviste que comprar, como kit completo de juntas,kit bomba agua.... Etc...Justo ahora voy a tener que hacer lo mismo, gracias

Why did you don't put the termostat

Wow you risked splitting the cases again, no rag stuffed in next to the crank ,to stop the clip falling down

@Tizzypj

2 жыл бұрын

He’s a pro no need mate

@eamh2002

2 жыл бұрын

@@Tizzypj Always use good pliers and never let them slip ;)

Hello, I have a DTR 125 and I can't find the throttle cable assembly witch has the oil mixer ajuster, can you show me the OEM numbers so i can find it? Thanks

Ustam bunun krank kolu ölçüleri nedir acaba...

Great video

@JLMotorsport

4 жыл бұрын

JUSTTRYANDSTOPIT Thanks 🚀

Bom trabalho Joel!

@JLMotorsport

4 жыл бұрын

Mota HC valeu!

Amazing video, mind me asking why did you put the first parts in the freezer and where did buy the parts from?

@JLMotorsport

3 жыл бұрын

Thanks, freezing parts, its part of a shrink process.

Hey i own a ktm lc 2 125 and the motor is like a twin to yours.where can i find that oil seal set?greetings from Greece!!!excellent job!!!

@JLMotorsport

4 жыл бұрын

gabrielknight206 try to look for dt125r they should be the same

We have overhauled the same engine for a KTM LC2 125. What oil do you use and what is the oil / fuel ratio? We threw the oil feeder away because it was damaged. Nice work, only this red silicone as someone wrote earlier, we use Reinz.

@JLMotorsport

3 жыл бұрын

Hi Kensy, we usually use in OEM engines "Castrol Power 1 Racing" @2,5%. If the engine is tuned we normaly use "Castrol A747" @4-5%

hi, I need help . In my yamaha dt 125 x motorcycle, the coolant liquid has been introduced into the transmission and mixed. What joint is broken? What can be?

@lennicrafter8902

4 жыл бұрын

Waterpump Seal

Were the clutch plates submerged in oil before installation or did they go in dry?

@MegaEnduras

2 жыл бұрын

Always in oil bath before installation- if possible for a few hours.

hey, what is that little hole on top of the engine top, next to the stud? is it for coolant?

@JLMotorsport

2 жыл бұрын

sorry, Can you add the video minute here?

Does OEM mean all original Yamaha parts that originally come with it? I want to rebuild my own engine and i am wondering if it is the original parts...

@JLMotorsport

3 жыл бұрын

Yes, same specs as standard parts.

My guyyyyy

Do you still remember where did you get all the bearings? Im trying to find all bearings for my dt 125 engine but only found the models for the crank bearings. I would need to replace all the transmission bearings too.

@JLMotorsport

Жыл бұрын

they all are generic bearings, if you strip them apart you will find the reference written on them.

@-recoilbear-2576

Жыл бұрын

@@JLMotorsport Thank you

Boas consegue dizer o torque de aperto dos componentes do motor ?

@JLMotorsport

3 жыл бұрын

É so procurar no google "metric torque chart" Ou entao o manual utilizado neste video, por 10-15€ vale apena.

JL motor sport you still have this dt125r m8 & what was the outcome on these crank seals did they seem to hold up ok or any issues with them bro ?

@JLMotorsport

3 жыл бұрын

No problems at all 👌🏻

@JLMotorsport

3 жыл бұрын

no problems at all 👌🏻

@officialmysteriousrider6327

3 жыл бұрын

@@JLMotorsport ok m8 thanks for your reply

Which manual book do you use?

@JLMotorsport

3 жыл бұрын

Haynes

hi mate! iv got a 97 dt125r and its recently developed a crack in the engine case and i want to try to fix it because i really dont want to sell the bike. the engine thats in the bike atm is a 4BL and i was wondering if its possible to switch all the engine components into a LC2 or a 3BN engine case? thanks in advance

@JLMotorsport

2 жыл бұрын

Yes, thats compatible.

@GuvnaFPS

2 жыл бұрын

@@JLMotorsport thanks mate appreciate the response 👌

What brand is that crankshaft?

@JLMotorsport

4 жыл бұрын

FlexiFuel OEM.

At 30:50 What is that part that Spins called? And How do you wire that part?

@JLMotorsport

3 жыл бұрын

Do you mean the power valve? (YPVS)

@bradl6722

2 жыл бұрын

It’s just a servo connected to the cables shown

Is it normal that the crankshaft does not turn too easily after assembly?

@JLMotorsport

3 жыл бұрын

Yes it is normal when you fit new engine seals, it should get free after 2-3 heating cycles.

@LHRPerf

3 жыл бұрын

@@JLMotorsport ok bro good to know

How much Ho did you get out of it and where did you get the parts to

@bradl6722

2 жыл бұрын

Hp

just need a dep pipe now lad!

@JLMotorsport

3 жыл бұрын

We make our own exhaust systems, gonna upload a new video this week about it 💯🚀

You removed the thermostat?

@JLMotorsport

3 жыл бұрын

Some countries in europe Yamaha do not fit Thermostat.

Thats a TZR piston though, its different size in crown height + dome shape and this one seems to be a taiwanese 40-50$ piston because a DTR ProX has an extra 5mm hole exhaust side AND the intake skirt is square shaped :) There are some slots under the piston pin too in a ProX for added lubrication. You could use a DT then TZR piston after each other to preserve the cylinder bore for example STD tzr is 56,40mm but dt stock is 56,00mm. For example 56.25(DT)->56,40(TZR)->56.50(DT)->56,65(TZR) etc ;) Those taiwanese pistons are alot heavier than genuine ProX pistons aswell. I get alot more vibration with them. Edit: *You placed the second o-ring for ypvs valve in the wrong spot and forgot to install it on the endcap at **22:24* :)

@yann5427

Жыл бұрын

What's the purpose of the little hole on the piston ? Isn't it better without the hole ?

@eamh2002

Жыл бұрын

@@yann5427 If you mean the 5-6mm size hole its for extra cooling and might be some low end torque boost port aswell. The small holes that a tzr piston has at exhaust port sides are for extra lubrication :)

@officialmysteriousrider130

Жыл бұрын

​@@yann5427feed's oil to the little end & port bridge

Onde posso arranjar um suporte de motor igual? Bom video😃

@JLMotorsport

3 жыл бұрын

Este foi fabricado por nós com flat bar de aço.

@pedromarreiros7256

3 жыл бұрын

Okok obgd

My clutch basket has 4 spring holes not 5 it's a 91 tzr? Any ideas why?

@JLMotorsport

4 жыл бұрын

TheMurphy331 tzr engine is different, it has only 4 clutch springs.

@TheMurphy331

4 жыл бұрын

@@JLMotorsport ah thanks for the reply mate I thought the dtr and the tzr were identical engines! Mine has alot of play on the clutch casing so need to replace it :( also got loads of engine vibration to the handlebars which makes it unridable so that's why I initially stripped it down and noticed this. Hoping it will fix the vibrations

@JLMotorsport

4 жыл бұрын

TheMurphy331 sometimes vibration its due to a bad crank truing. just check your crank shafts.

@TheMurphy331

4 жыл бұрын

@@JLMotorsport checked it mate. I've got the head off now and crank seems perfect 🤷‍♂️

@JLMotorsport

4 жыл бұрын

TheMurphy331 max +-0,05mm clearance.

Hi, what's the name of the book of the Specification of the piston ring gap?

@JLMotorsport

3 жыл бұрын

Hi Antonio, its called "Haynes"

@AlfaAddict

3 жыл бұрын

When you buy wossner piston they give you the specification. It's something like diameter of the bore x0.004mm for the top ring and x0.005mm for the bottom. This gave me a ring gap of 22.8mm for the top ring and 28.5 for the bottom one. Haynes gives a much greater range though.

@AlfaAddict

3 жыл бұрын

This was because I had an over bored cylinder of 57mm

Bro were can can i get yamaha wr200 oem spares online...

@JLMotorsport

2 жыл бұрын

Fowlers Parts | Genuine Motorcycle Parts & Spareswww.fowlersparts.co.uk Try this guys.

sparkplug what model is?

@JLMotorsport

3 жыл бұрын

We using 105 NGK

Ola Joel gustei imenso do vídeo, quero trocar o pistón a Michael dt re que conselho me podes dar, tenho k sacar o motor verdad, sou aficçionado a mecánica, um saludo

@JLMotorsport

3 жыл бұрын

Geralmente aos 30mil km o motor precisa de levar biela nova, rolamentos de cambota, piston novo e retificaçao acima.

Hi how much nm did you use at 9:00 And 10:45. Thanks

@JLMotorsport

2 жыл бұрын

45N.m

HeLP!!!!!Добрый день ,подскажите стоит цилиндр 4FU00, могу ли я его заменить на 3MB00

@olegmalar

8 ай бұрын

+pistone

Great bro is it liquid cool

@JLMotorsport

3 жыл бұрын

yes it is

bro, i"m 15, i bought derbi gpr 125 2t but im scammed, this engine don"t working, I don"t know how to fix it, I think the crankshaft, cylinder and pistons is broken but i don"t know how to fix it

@JLMotorsport

2 жыл бұрын

Hi bro, this video will guide you through your rebuild, its part of the learning process, people have to start somewhere init?

Does anyone know if it is the same engine on an Yamaha TDR 125 from 1996?

@JLMotorsport

2 жыл бұрын

Exactly the same.

@krisasdfgz

2 жыл бұрын

@@JLMotorsport Super! Thanks for the quick response.

@Bdp13

2 жыл бұрын

@@JLMotorsport hi I have a 125 r dt from 96 and i need some help, what is the torque spec for the crankshaft nut and the clutch basket nut?

@JLMotorsport

2 жыл бұрын

@@Bdp13 about 50-55N.m

@Bdp13

2 жыл бұрын

@@JLMotorsport thank you

It s the same engine for all bike from description?

@JLMotorsport

3 жыл бұрын

Yeah

@dascaluradu-ionel1788

3 жыл бұрын

@@JLMotorsport a want to buy a Sachs with this engine, some opinions?

@JLMotorsport

3 жыл бұрын

@@dascaluradu-ionel1788 exacly the same engine, diferent covers

19:21 I don't understand why you put this segment or ring, supposedly it's not just for a 4-stroke engine? 19:21

@JLMotorsport

Жыл бұрын

Hi, thats just to pre load (spring) the bottom ring, some piston brands use them to add a bit more longevity in their pistons.

Why is one Clutchpad smaler than the other seven, i am rebuilding my engine and im wondering why one clutchpad is smaller, at 10:59 you can see it :)

@JLMotorsport

3 жыл бұрын

its to fit the clutch "non-stick" spring between them.

@burk.florian

3 жыл бұрын

Trank you, but you dont use this spring in your Video am i right?

@JLMotorsport

3 жыл бұрын

@@burk.florian in fact I didnt fit it, but then needed to go back and add it in place, missed it when was shooting.

@burk.florian

3 жыл бұрын

Alright thank you Mate :)

@JLMotorsport

3 жыл бұрын

@@burk.florian You're welcome. 👌

which bolts you are used?

@JLMotorsport

2 жыл бұрын

Hi always use Cap head stainless bolts in my builds.

@zile6057

2 жыл бұрын

@@JLMotorsport ok bro, thanks

@JLMotorsport

2 жыл бұрын

@@zile6057 Good luck with that bro 👌🏻

Dt best bick 2 stork yamaha👍

Super construction, only the silicone is a pig.

@JLMotorsport

Жыл бұрын

I know, later on Had strip it apart due massive leaks from that silicone 🤣

Hello.Can you tell me where you buy water pump kit and how much costs

@JLMotorsport

2 жыл бұрын

from yamaha, costs about 30£

@biilsonbandzonovic3201

2 жыл бұрын

@@JLMotorsport please can you find this kit and copy link here i cant find

@JLMotorsport

2 жыл бұрын

@@biilsonbandzonovic3201 www.fowlersparts.co.uk/parts/4171889/dt125r-3rmm-2002-050-a/water-pump

what is the name and where i can buy the manual what you use at 19:42?

@JLMotorsport

3 жыл бұрын

Haynes

@marcomx9580

3 жыл бұрын

@@JLMotorsport but my original haynes manual isn't like your manual

@JLMotorsport

3 жыл бұрын

@@marcomx9580 maybe this is a newer edition.

@marcomx9580

3 жыл бұрын

@@JLMotorsport can you link it me?

@JLMotorsport

3 жыл бұрын

@@marcomx9580 www.ebay.co.uk/itm/113315188378

Why did you put some parts in the freezer? Good video BTW 👍

@JLMotorsport

3 жыл бұрын

To Shrink the crankshaft so could easy fit into the (previously heated) bearings. Thanks 👌🏻

@LHRPerf

3 жыл бұрын

@@JLMotorsport does it work without crank puller if heated properly?

@JLMotorsport

3 жыл бұрын

@@LHRPerf This is only to fit the crankshaft to the main bearing, if you want to disassemble the crankshaft to the bearing, you have to use a crankshaft puller or a press.

@LHRPerf

3 жыл бұрын

@@JLMotorsport yeah bute can i also fit the crankshaft into the main bearing without puller?

@JLMotorsport

3 жыл бұрын

@@LHRPerf yeah easy.

Better use something like Dirko or Victor Reinz than that K2 silicon ;D

May I know this specs? ✌️

@JLMotorsport

3 жыл бұрын

Its a Full OEM DT125R Engine 2002

@junaiduahmad867

3 жыл бұрын

✌️

Think you missed something

Achtung!! Er hat vergessen zu zeigen das Schaltgestänge rein zu tun!

@2strokesumo229

3 жыл бұрын

Fährst du zufällig dt?

@Soosenbinder_

3 жыл бұрын

@@2strokesumo229 ehm ja

If you think its ok to get work from pjme, you think it ok to hammer bearings. Its not right or wrong, just different standards

Didn't lube the rings at all used after market gaskets n seals can't of lasted long haha

How Old is the engine?

@JLMotorsport

2 жыл бұрын

This particularly one is from 2003, but they are basically the same since 1988.

@Jensenjens32123

2 жыл бұрын

I Got a dt 125 lc from 85, do you know How to get more hp out the engine?

@Jensenjens32123

2 жыл бұрын

Maybe a new cylinder and carb?

@JLMotorsport

2 жыл бұрын

@@Jensenjens32123 Bigger carburetor and a nice exhaust system could help you. Check our instagram page, we build a mk1 dt 125 lc 2 years ago. @jl.motorsport.uk

putting all that stress on the con rod when tightening the cog nut was not correct, use a penny , softer metal than the cog and jam it up with that , the force you just put through that thing is deffo not helping anything

👍👍👏👏👏👏👏👏😂